1 /* 2 * Copyright 2016 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef Viewer_DEFINED 9 #define Viewer_DEFINED 10 11 #include "sk_app/Application.h" 12 #include "sk_app/CommandSet.h" 13 #include "sk_app/Window.h" 14 #include "gm.h" 15 #include "ImGuiLayer.h" 16 #include "SkAnimTimer.h" 17 #include "SkExecutor.h" 18 #include "SkJSONCPP.h" 19 #include "SkTouchGesture.h" 20 #include "Slide.h" 21 #include "StatsLayer.h" 22 23 class SkCanvas; 24 25 class Viewer : public sk_app::Application, sk_app::Window::Layer { 26 public: 27 Viewer(int argc, char** argv, void* platformData); 28 ~Viewer() override; 29 30 void onIdle() override; 31 32 void onBackendCreated() override; 33 void onPaint(SkCanvas* canvas) override; 34 bool onTouch(intptr_t owner, sk_app::Window::InputState state, float x, float y) override; 35 bool onMouse(int x, int y, sk_app::Window::InputState state, uint32_t modifiers) override; 36 void onUIStateChanged(const SkString& stateName, const SkString& stateValue) override; 37 bool onKey(sk_app::Window::Key key, sk_app::Window::InputState state, uint32_t modifiers) override; 38 bool onChar(SkUnichar c, uint32_t modifiers) override; 39 40 struct SkPaintFields { 41 bool fTypeface = false; 42 bool fPathEffect = false; 43 bool fShader = false; 44 bool fMaskFilter = false; 45 bool fColorFilter = false; 46 bool fDrawLooper = false; 47 bool fImageFilter = false; 48 49 bool fTextSize = false; 50 bool fTextScaleX = false; 51 bool fTextSkewX = false; 52 bool fColor = false; 53 bool fWidth = false; 54 bool fMiterLimit = false; 55 bool fBlendMode = false; 56 57 uint32_t fFlags = 0; 58 enum class AntiAliasState { 59 Alias, 60 Normal, 61 AnalyticAAEnabled, 62 AnalyticAAForced, 63 DeltaAAEnabled, 64 DeltaAAForced, 65 } fAntiAlias = AntiAliasState::Alias; 66 bool fOriginalSkUseAnalyticAA = false; 67 bool fOriginalSkForceAnalyticAA = false; 68 bool fOriginalSkUseDeltaAA = false; 69 bool fOriginalSkForceDeltaAA = false; 70 71 bool fTextAlign = false; 72 bool fCapType = false; 73 bool fJoinType = false; 74 bool fStyle = false; 75 bool fTextEncoding = false; 76 bool fHinting = false; 77 bool fFilterQuality = false; 78 }; 79 private: 80 enum class ColorMode { 81 kLegacy, // N32, no color management 82 kColorManagedSRGB8888_NonLinearBlending, // N32, sRGB transfer function, nonlinear blending 83 kColorManagedSRGB8888, // N32, sRGB transfer function, linear blending 84 kColorManagedLinearF16, // F16, linear transfer function, linear blending 85 }; 86 87 void initSlides(); 88 void updateTitle(); 89 void setBackend(sk_app::Window::BackendType); 90 void setColorMode(ColorMode); 91 int startupSlide() const; 92 void setCurrentSlide(int); 93 void setupCurrentSlide(); 94 void listNames() const; 95 96 void updateUIState(); 97 98 void drawSlide(SkCanvas* canvs); 99 void drawImGui(); 100 101 void changeZoomLevel(float delta); 102 SkMatrix computeMatrix(); 103 SkPoint mapEvent(float x, float y); 104 resetExecutor()105 void resetExecutor() { 106 fExecutor = SkExecutor::MakeFIFOThreadPool(fThreadCnt == 0 ? fTileCnt : fThreadCnt); 107 } 108 109 sk_app::Window* fWindow; 110 111 StatsLayer fStatsLayer; 112 StatsLayer::Timer fPaintTimer; 113 StatsLayer::Timer fFlushTimer; 114 StatsLayer::Timer fAnimateTimer; 115 116 SkAnimTimer fAnimTimer; 117 SkTArray<sk_sp<Slide>> fSlides; 118 int fCurrentSlide; 119 120 bool fRefresh; // whether to continuously refresh for measuring render time 121 122 bool fSaveToSKP; 123 124 ImGuiLayer fImGuiLayer; 125 SkPaint fImGuiGamutPaint; 126 bool fShowImGuiDebugWindow; 127 bool fShowSlidePicker; 128 bool fShowImGuiTestWindow; 129 130 bool fShowZoomWindow; 131 sk_sp<SkImage> fLastImage; 132 133 sk_app::Window::BackendType fBackendType; 134 135 // Color properties for slide rendering 136 ColorMode fColorMode; 137 SkColorSpacePrimaries fColorSpacePrimaries; 138 SkColorSpaceTransferFn fColorSpaceTransferFn; 139 140 // transform data 141 SkScalar fZoomLevel; 142 143 sk_app::CommandSet fCommands; 144 145 enum class GestureDevice { 146 kNone, 147 kTouch, 148 kMouse, 149 }; 150 151 SkTouchGesture fGesture; 152 GestureDevice fGestureDevice; 153 154 // identity unless the window initially scales the content to fit the screen. 155 SkMatrix fDefaultMatrix; 156 157 SkTArray<std::function<void(void)>> fDeferredActions; 158 159 Json::Value fAllSlideNames; // cache all slide names for fast updateUIState 160 161 int fTileCnt; 162 int fThreadCnt; 163 std::unique_ptr<SkExecutor> fExecutor; 164 165 SkPaint fPaint; 166 SkPaintFields fPaintOverrides; 167 }; 168 169 170 #endif 171